1px draw radius is unnecessary for nw and causes a 1px artifact at the corner of all windows
Fixesnwjs/nw.js#331
We create a mouse dead zone on frameless windows, because the drag handles are only available within the window border -- not outside (as the case is for framed windows). The if block was incorrectly only covering the dead zone on one side of the window -- not all four.
Fixesnwjs/nw.js#321

Unfortunately it seems like this issue is back with 0.10.5 on windows. (only tested windows 7)
I've tested with the basic Frameless window demo and resizable:false in manifest.json.
The 5 outer most pixels on all edges of the window are dead.

In 0.13 we changed to an optimized architecture so more features can be supported, see http://nwjs.io/blog/whats-new-in-0.13/ and it's good for keeping up with Chromium upstream -- we released with Node.js v6.0 and new Chromium versions within 1 day after upstream release.

The new version would fixed many issues reported here and we're scrubbing them. This issue is closed as we believe it should be fixed. Please leave a message if it isn't and we'll reopen it.